Paper-folding device



N ovi 11/193 H. A. w. WOOD 1,781,422

ING DEVICE Original Filed Aug. 8, 1922 Jferary A. 266-! Woocl ,rsy aUbr-me s 50 this difficulty by registering the Patented Nov. 11, 1930 UNITED STATES PATENT OFFICE HENRY A. wrsn woon, OF new YORK, n. Y., ASSIGNOR r woon NEWSPAPER MA- CHINERY CORPORATION, or new YORK, n. Y, A conronarron or VIRGINIA PAPER-FOLDING DEVICE Application filed August 8, 1922, Serial No. 580,439. Renewed May 17, 1928.

This invention relates to the folding rolls of a machine for folding highly illustrated products at a high rate of speed.

The principal object of the invention is to provide a new methodof folding and means connected with the folding rolls for positively forwarding the folded products without subjecting the printed, or especially the highly illustrated, surfacesto pressure between the rolls, and thus avoiding the smutting and smudging of the sheets by the offset of ink from one sheet to another. It is also an ob ect of this invention to provide means for accomplishing the above mentioned result which will work at a very high rate of speed. Means is also provided for positively and effectively creasing the fold of the product.

Reference is to be had to the accompanying drawings, in which Fig. 1 is a sectional view of a pair of folding rolls constructedin accordance with this invention and showingthem in their proper position with relation to the folding cylinder;

Fig. 2 is an enlarged end View of these rolls showing them partly in section;

Fig. 3 is aside view of one of the rolls;

Fig. 4 is a view of the folding blade with slots for the folding pins to pass through;

Fig. 5 is a transverse sectional view show- 3@ ing modifications;

Fig. 6 is a view similar to Fig. 1 showing another modification, and

Fig. 7 is a side view of one of the rolls shown in Fig. 6.

The offsetting of ink from highly illustrated parts of newspapers and magazines between the folding rolls of the folding machine has been a serious problem since high speed presses have been in operation. This ink does not have time'to dry before the web is cut up into sheets, or other folded products, and passed between the folding rolls. These rolls have usually pressedon the sheets throughout their areas in order to feed them forward accurately, and fold them with a good crease. This causes trouble in two ways. The folding rolls themselves take up ink from the outside of the sheet and putit back on the next sheet. Attempts have been made to obviate or lessen fold n rollers so that they contact with the sheets at the same point always, and I wish to retain that feature in this machine. Also the illustrated or highly inked parts on the insides of the folding products come against each other and have heretofore been pressed into closecontact, thus smearing the inside surfaces.

This invention is designed for the purpose of positively feeding the folded products between the folding rolls without exerting pressure at any point on their surfaces so that neither one of these difficulties is likely to occur. For this purpose the two folding cylin ders 20 are set a little farther apart than usual, so that their solid surfaces will not come into pressing contact with the paper passing between them from the folding cylinder 19. They are provided, or one of them is, with rows of pins 21 extending around the circumference at both ends and adapted either to penetrate the paper along the margins or to contact with these margins sufficiently to cause the paper to move in exact unison with the rolls.

The pins 21 can be located directly on one or both the rolls as shown in Figs. 6 and 7, or they can be mounted on separate collars 22 as shown in Figs. 1, 2 and 8. These collars preferably are mounted to yield and have central passages larger than the shafts or studs of the rolls that pass through them. This can be done by mounting two studs 24 on each end of the roll 20 and surrounding each stud by a rubber washer 25. The collars 22 are provided withtwo opposite perforations fitting s said washers and are held in position by nuts and washers 26 of the ordinary type if desired. This permits the two collars which contact with each other at each end of the pair of rolls to yield slightly and enables the pair of rolls to take products of different thicknesses.

These pins will enter or impinge against shown in Figs. 6 and 7 these pins are set directly in the roller and are rigidly mounted. This, as shown in these two figures, provides a method of folding between the folding rolls without pressing any part of the product underpressurea H 7 V I have also shown-"the rolls inFigs. 1,2

and 3 and also in Fig. each provided with a. longitudinal folding bloclr27Q These blocks .may have pins 28.1nounted rigidly on them'a s'shown in Fig. 5, those in one ofthe blocks alternating with thoseof the other.

They can have the pins mounted on the roll as shown inF-ig.landtheblock slidableo-n' them and forced outwardly by springs 29. Either v one or both' of the block's'may be spring'mounted, and either or both can. be providedwith pins, as'shown respectively in Eigs-Qandfi. In this casethe foldingiblade 30 isprovided with slots 1 or notches 31 at its folding edgeithrough which the pinssweep whenthey impale the product that is tucked between the'rollcrs-bythe folding blade.

These *folding blocks are provided when desired for the purposeof forming a crease atltheifold of the product andgetting positive pressure atthatpoint alongthe margin that occurs .-there,'but in 'Figsfi and 7 thisfeature is omittedand the folding is done entirely without pressing contact-by the folding rolls witheanyipartof the printed product;

' I t' is found that'the products will pass through these rollsineither caseand be folded and'fed positively and accurately Without the transfer of the-ink 5101110116 sheet :to anothervby the pressure ofthe rolls because in all casesthereiis no pressure of the rolls on;the printedsur-faces;

Although] have illustratedand described only three :forms-ofzthe inventionI am aware of the :fact :that modifications (can i be made thereiniby any person skilled inzthe art with out departing from the scope of theinventiouuctat-points ,on its margin and constantly and positively forwarding it between the rolls as they rotate without'placing any part of the printed product in contact withythe rollsand underpressureof said rolls.

4 2 As an article ofmanufacture, folding rollhavingsharp points projectingfrom its surface forpier'cing the printed product .to

be folded and forwarding it, said points being located inrestricted areasaround theroll, Iandconstituting'the only means on the .roll

for forwarding the printed product after the fold is made.

3. As an article of manufacture, a folding roll having at the end thereof a circumferential series of, pins having sharp points projecting radially from the roller for: im-

pinging on the product, I and a longitudinal series of pins.

4E. The combination with a a. of folding rolls for folding printed products having sharp pointed projections aroundthei'r cirficumferences for impinging upon the printed product at points on its surface and forwardit :between' the rolls as they rotate, one of said rollshaving a series of'pins arranged longitudinally thereon for engaging the folded .product at the folded -marg'in and positively feeding it. .i V. In a folding machine, the combination with a folding; cylinder and-capair; of folding rolls,.of a series ofv pins-on said rolls for impingingflupon and forwarding a" doubled printed product between them, means for a.

folding it without-placing any part ,of the printed-product'under pressure of said rolls, said cylinder ihaving .axfolding blade provided with slots registering'with the pinsto permit them to pass through them. 6. The combination with .a folding cylin- 7 derandaipairof folding rolls therefor having IIIGaIISQZtIOLlIICl theirqcircuinference for engaging the printedproduct at points at 7 lts margins and forwarding litbetween the rolls as they rotate,one ofsaid rolls having a series of pins arranged longitudinally thereon lforlengagingthe folded product at the folded margin and positively feeding it, and [a folding blade on said cylinder provided with-slots for the pins of said rolls to passthroughf 1- H 7. Themethod of folding printed products which consistsinpassing them between a palr of;rolls-having their surfaces located far r enough apart to leave a spacebetween them wider thanthe thickness ofa folded product p and .prevent the application ofpressure, by said rolls, to any part ofthe printed product and piercing the product progressively to positively forward it with the rotation of the rolls by contact withtheprinted product atfthe marginsthereof. a.

.8. As an article of ,manufacture, a fold,-

, ing roll forreceiving-folded products from a folding cylinder having fixed pins arranged in a series alongthe-rollfor engaging a folded. product at the folded margin. 9. The combination of-a pair of folding rolls, oneofthem havingalongitudinal series of radial pins projecting into contact with a V f r i -In-testnnony whereof :1 have hereunto af- I the other ,roll. 7

fixed signature.

HENRY AQWIISEQWiOODf 

